Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Liberty Ammunition Overwatch 300 AAC Blackout ammo brings 96 grains of solid copper alloy into the fight at 2500 feet per second, delivering 1332 foot-pounds of muzzle energy and 12-16 inches of gel penetration. Born from a special forces request, Overwatch bridges the gap between the shallow, rapid fragmentation of Liberty’s Civil Defense line and the deeper reach demanded by barrier-heavy scenarios. The fragmenting hollow point construction triggers radial dispersion on impact — Liberty calls it Maximum Organ Displacement (MOD) — while the added projectile weight drives the core deeper before breakup begins. For suppressed AR-15 platform rifles and bolt-action 300 Blackout builds, this is the lead-free answer when overpenetration is a liability but shallow expansion won’t cut it.
Built for the Box
Each Overwatch round seats a monolithic copper projectile in a nickel-plated brass case. Boxer primers and non-corrosive propellant keep cases viable for reloading; the nickel finish sheds moisture and feeds cleanly through gas-impingement systems running suppressed backpressure. At 96 grains, the bullet sits between featherweight frangibles and traditional 110-125 grain subsonic loads, splitting velocity and momentum to push penetration into FBI protocol depth while maintaining fragmentation behavior once inside tissue simulant. Liberty manufactures every component in the United States, and the solid-copper construction eliminates lead exposure at the bench and downrange — a feature California Prop 65 compliance and indoor range policies both favor.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 300 AAC Blackout (7.62×35mm) |
| Bullet weight | 96 grains |
| Bullet type | Fragmenting hollow point (solid copper) |
| Muzzle velocity | 2500 fps |
| Muzzle energy | 1332 ft-lbs |
| Rounds/box | 20 |
| Case | Nickel-plated brass |
| Primer | Boxer |
| Corrosive | No |
| Lead-free | Yes |
| Intended use | Self-defense |
| Manufacturer | Liberty Ammunition (USA) |
Overwatch sits in the Liberty lineup as the middle road: deeper than Civil Defense, faster than most subsonic hollow points, and engineered for shooters who need barrier penetration without full-metal-jacket overpenetration risk. For more options across the supersonic and subsonic spectrum, browse our full 300 Blackout ammo selection.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Observe the four rules of firearm safety at all times — treat every firearm as loaded, never cover anything you’re unwilling to destroy, keep your finger off the trigger until sights are on target, and know your target and what lies beyond it.
- Verify that your rifle or pistol is chambered in 300 AAC Blackout (7.62×35mm) before loading — 300 Blackout headstamps can chamber into 5.56 NATO barrels but will cause catastrophic failure on firing.
- California Proposition 65: This product contains materials known to the State of California to cause cancer and reproductive harm. See P65Warnings.ca.gov for details.
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